. >> reporter: which chilling bank surveillance tape shown in court shows jennifer hawke petit minutes before her death as she withdraws $15,000 she nervously alert it is teller that she's getting the money for men holding her family hostage. as mrs. petit walked away, a bank manager called 911. >> reporter: by the time the police encountered the suspects at the petit home 33 minutes later, mrs. petit and her daughters 11-year-old michaela and 17-year-old hayley were dead. mrs. petit had been raped and strangled. her daughters died after inhaling smoke as their home was set on fire. her husband, who had been beaten and bound, barely escaped to a neighbor's house. >> reporter: questions today centered around why the police took so long to try to rescue the family. an officer testified they were following hostage protocol. dr. william petit was the sole survivor of the brutal home invasion. earlier this week, he testified the men, steven hayes and joshua komisarjevsky were strangers who threw him in the basement almost immediately. the suspects wanted to plead guilty in exchange for life